WO2011061489A1 - A drill guide - Google Patents

A drill guide Download PDF

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Publication number
WO2011061489A1
WO2011061489A1 PCT/GB2010/002117 GB2010002117W WO2011061489A1 WO 2011061489 A1 WO2011061489 A1 WO 2011061489A1 GB 2010002117 W GB2010002117 W GB 2010002117W WO 2011061489 A1 WO2011061489 A1 WO 2011061489A1
Authority
WO
WIPO (PCT)
Prior art keywords
drill guide
movable foot
foot
drill
tubular element
Prior art date
Application number
PCT/GB2010/002117
Other languages
French (fr)
Inventor
Mona Alinejad
Christopher Alexander Dodd
John Wiliam Goodfellow
Russell Lloyd
David Wycliffe Murray
John Joseph O'connor
Original Assignee
Biomet Uk Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Biomet Uk Limited filed Critical Biomet Uk Limited
Priority to EP10781729.8A priority Critical patent/EP2501302B1/en
Priority to KR1020127015320A priority patent/KR101757010B1/en
Priority to JP2012539404A priority patent/JP5750117B2/en
Priority to US13/510,480 priority patent/US9028503B2/en
Priority to EP15152599.5A priority patent/EP2896375B1/en
Priority to CA2781006A priority patent/CA2781006C/en
Priority to AU2010320719A priority patent/AU2010320719B2/en
Publication of WO2011061489A1 publication Critical patent/WO2011061489A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
    • A61B17/1764—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the knee
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/14—Surgical saws ; Accessories therefor
    • A61B17/15—Guides therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1717—Guides or aligning means for drills, mills, pins or wires for applying intramedullary nails or pins
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1725—Guides or aligning means for drills, mills, pins or wires for applying transverse screws or pins through intramedullary nails or pins
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1728—Guides or aligning means for drills, mills, pins or wires for holes for bone plates or plate screws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72—Intramedullary pins, nails or other devices

Definitions

  • the present invention relates to a drill guide particularly, but not exclusively, a femoral drill guide for use during a partial knee replacement.
  • the joint is prepared by first resecting the tibial plateau. Following resection of the tibial plateau, one or more holes are then drilled into the femoral condyle to receive a cutting guide for resecting the condyle. Conventionally, a hole is made in the intramedullary canal of the femur, into which an intramedullary rod is inserted. The intramedullary rod acts as a reference for the drilling of the hole or holes which locate the cutting guide. These holes may also serve to locate the femoral component of the prosthetic following resection of the femoral condyle.
  • the femoral component may comprise a single fixation peg or two fixation pegs which are received in holes in the femur.
  • the femoral component may comprise one or more webs.
  • the webs may be thin layers of material, which may extend between the pegs.
  • a two peg component provides greater coverage (i.e. a larger degree of rotation) and may be selected where the patient's lifestyle is such that they are squatting regularly.
  • the intramedullary rod is used as a reference for locating the hole(s) for receiving the cutting guide.
  • a drill guide may be used to reference from the intramedullary rod in order to properly locate the cutting guide.
  • Existing drill guides require the surgeon to align the drill guide with the intramedullary rod in various planes so that the guide hole is placed in the correct position on the femur.
  • a tibial template is placed on the resected tibial plateau and the drill guide inserted into the operative wound.
  • a feeler gauge is then inserted in between the tibial template and the drill guide. Due to this layering of components there is a stack up in the tolerances of each component.
  • a drill guide comprising: a body comprising a hole extending therethrough for guiding a drill; and an alignment tool, the alignment tool being operable to connect the body to an intramedullary rod, such that the orientation of the body is fixable with respect to the intramedullary rod in an anteroposterior plane and in a transverse plane.
  • a drill guide comprising: a body comprising a hole extending therethrough for guiding a drill; wherein the body comprises a fixed foot and a movable foot which are receivable within a joint; wherein the movable foot is releasably attached to the body and, when in a released state, the movable foot is translatable with respect to the fixed foot, such that the fixed foot contacts a first bone of the joint and the movable foot contacts a second bone of the joint.
  • a drill guide comprising: a body and a tubular element, the tubular element having a hole extending therethrough for guiding a drill; wherein the tubular element is pivotably mounted with respect to the body such that the angle of the tubular element with respect to the body is adjustable.
  • the alignment tool may comprise a first arm and a second arm, the first arm being operable to connect the alignment tool to the body and the second arm being operable to connect the alignment tool to the intramedullary rod.
  • the first and second arms may be pivotably connected to one another such that the distance between the first and second arms can be altered.
  • the intramedullary rod may be cannulated and the second arm is received within the intramedullary rod.
  • the body may have a mounting hole for receiving the alignment tool.
  • the mounting hole may be angled to the left or right lateral side of the body.
  • the mounting hole may be angled to the left or right lateral side of the body by 7°.
  • the mounting hole may be angled in the vertical plane relative to the body.
  • the mounting hole may be angled down by 5°.
  • the alignment tool may comprise a handle.
  • the movable foot may be releasably attached to the body by a screw which passes through a slot in the body and into the movable foot.
  • the movable foot may be locked in position by tightening the screw such that a section of the body disposed between a head of the screw and the movable foot is held therebetween.
  • the drill guide may further comprise an incremental locking means for locking the movable foot in predefined positions.
  • a leading edge of the movable foot may be curved in the plane of the movable foot.
  • An underside of the movable foot may be curved along its length.
  • the hole may comprise first and second holes, which extend through the body at different angles.
  • the first and second holes may be angled at 0° and 10° respectively or 5° and 15° respectively.
  • the body may further comprise a protrusion on a left lateral side of the body and a protrusion on a right lateral side of the body.
  • the distance between the protrusions may be equal to a width of a femoral component.
  • the drill guide may further comprise a locking mechanism for locking the angle of the tubular element with respect to the body.
  • the drill guide may further comprise an indexing mechanism for positioning the tubular element in predefined angles with respect to the body.
  • the tubular element may be translatable with respect to the body.
  • the tubular element may be translatable toward the top or bottom of the body.
  • Figure 1 is a side view of a drill guide in accordance with the invention, wherein the drill guide is in use;
  • Figure 2 is a top view of the drill guide;
  • Figure 3 is a front view of the drill guide
  • Figure 4 is a second side view of the drill guide in Figure 1 during drilling.
  • FIG 1 shows a drill guide 2 in accordance with a first embodiment of the invention, wherein the drill guide is located in a knee joint between the tibia and the femur.
  • the drill guide 2 comprises a body 4.
  • the body 4 has a first drilling hole 6 and a second drilling hole 8 which each extend longitudinally through the body 4 (as shown in Figure 3).
  • the first and second drilling holes 6, 8 are aligned at different angles which correspond to the required location of holes for the single peg femoral component or the two peg femoral component.
  • the first and second drilling holes 6, 8 are shown angled at 0 ° and 10" respectively, however the angles may be chosen as 5 ° and 15° or other suitable angles for the femoral components which may be used.
  • the body 4 of the drilling guide 2 is provided with protrusions 10, 12 on both the left lateral and right lateral side of the body 4.
  • the distance from the end of one protrusion to the other is equal to the width of the femoral component and thus provides a means of aligning the drill guide 2 in the centre of the femoral condyle.
  • the drill guide 2 may be supplied in different sizes which correspond to the size of the femoral component e.g. the width of the component and/or the radius of curvature of the component.
  • the protrusions 10, 12 may be replaced with different sized protrusions to indicate the correct width of the component.
  • the body 4 is provided with a fixed foot 14 and a movable foot 16.
  • the movable foot 16 is releasably attached to the body 4 by a screw 18 or other such means which passes through a slot 19 in the body 4 and into the movable foot 16.
  • the movable foot 16 is locked in position by tightening the screw 18 such that the section of the body 4 disposed between the head of the screw 18 and the movable foot 16 is held therebetween.
  • the movable foot 16 is released by undoing the screw 18 sufficiently so that the body 4 is no longer held between the head of the screw 18 and the movable foot 16.
  • the movable foot 16 is then free to translate toward or away from the fixed foot 14.
  • the body 4 and movable foot 16 may be provided with an incremental locking means 20.
  • the incremental locking means 20 allows the movable foot 16 to be translated and locked in predefined positions.
  • the incremental locking means 20 may be provided with a scale for determining the position of the movable foot 16.
  • the fixed foot 14 is narrow to allow reference off the posterior femoral condyle without interference from femoral osteophytes.
  • the movable foot 16 has a leading edge which is curved in the plane of the movable foot 16. This allows the movable foot 16 and therefore the drill guide 2 to be angled relative to the vertical cut on the tibial plateau.
  • the underside of the movable foot 16 is also curved along its length. This curvature allows the drill guide 2 to be rotated about the tibial plateau in the anteroposterior plane.
  • the drill guide 2 further comprises an alignment tool 22 for aligning the body 4.
  • the alignment tool 22 has a handle 23 and a bifurcated end, the bifurcated end having a first arm 25 and a second arm 26.
  • the first arm 25 is received within a mounting hole 28 provided on the top of the body 4 of the drill guide 2.
  • the drill guide 2 is provided with two mounting holes 28 for use of the drill guide 2 on a left or right knee.
  • An intramedullary rod 24 is passed into the intramedullary canal of the patient, which provides a reference for the drill guide 2. At least an end portion of the intramedullary rod 24 is cannulated and the second arm 26 is received within the intramedullary rod 24. Alternatively, the second arm 26 may be cannulated so that the intramedullary rod 24 is received within the second arm 26.
  • the first and second arms 25, 26 are pivotably mounted on the handle 23 of the alignment tool 22 such that the distance between the first and second arms 25, 26 may be altered.
  • the mounting holes 28 are angled relative to the body 4, either to the left or right lateral side of the body 4 as shown in Figure 2, to provide the correct alignment, preferably 7 ° , for the drill guide 2 relative to the intramedullary rod 24. Also the mounting holes 28 may be angled in the vertical plane relative to the body 4; preferably they are angled down by 5 ° , as shown in Figure 2.
  • the drill guide 2 is inserted into the operative wound of the patient, with the movable foot 16 aligned with the fixed foot 14.
  • the movable foot 16 is then translated vertically such that the fixed foot 14 contacts the posterior femoral condyle and the movable foot 16 contacts the tibial plateau.
  • the position of the movable foot 16 is determined by the amount of bone resected from the tibial plateau.
  • the scale on the incremental locking means 20 may correspond to a setting on a previously used resection guide. This allows the surgeon to easily adjust the movable foot 16 to the correct position for the amount of bone resected from the tibial plateau so that the drill holes are correctly aligned on the distal femoral condyle.
  • the alignment tool 22 is connected to both the body 4 and the intramedullary rod 24 by inserting the first arm 25 into the correct mounting hole 28 and by inserting the second arm 26 into the cannulated end of the intramedullary rod 24.
  • the protrusions 10, 12 on the body 4 are then used to align the drill guide 2 in the centre of the femoral condyle.
  • the pivotably mounted first and second arms 25, 26 allow the distance between the first and second arms 25, 26 to be altered. This allows the drill guide 2 to be moved laterally whilst maintaining the correct alignment with the intramedullary rod 24 in both the anteroposterior and transverse planes.
  • the curvature of the underside of the movable foot 16 allows the drill guide to be rotated about the tibial plateau in the anteroposterior plane. This therefore enables the drill guide 2 to correctly align the drilling holes 6, 8 without the knee being in perfect 90° flexion.
  • a drill 30 is passed through one of the first and second drilling holes 6, 8 and drilled into the distal femoral condyle.
  • the drill 30 is drilled into the distal femoral condyle until a stop 32 on the drill 30 abuts the body 4 and prevents the drill 30 from drilling any deeper.
  • the length of the first and second drilling holes 6, 8 and the length of the drill 30 therefore controls the depth of the hole. .
  • the hole may be used to mount a cutting guide and/or milling spigot for resection of the femoral condyle to the desired shape for the femoral component.
  • the fixed foot may contact the tibial plateau and the movable foot may contact the posterior femoral condyle.
  • the first and second drilling holes 6, 8 may be replaced by a single drilling hole which is pivotably mounted in the body 4. By virtue of this pivotable mounting, the angle of the single drilling hole may be adjusted to correspond to the femoral component and locked in position by a locking mechanism.
  • the locking mechanism and single drilling hole may be provided with an indexing mechanism which provides discrete angles for the single drilling hole.
  • the present invention has been described in reference to a knee replacement; however the invention may be adapted to be used in other joints.
  • the present invention provides a drill guide which does not require the use of feeler gauges and which has a direct connection to the intramedullary rod so as to simplify alignment of the drill guide.

Abstract

A drill guide comprising: a body comprising a hole extending therethrough for guiding a drill; and an alignment tool, the alignment tool being operable to connect the body to an intramedullary rod, such that the orientation of the body is fixable with respect to the intramedullary rod in an anteroposterior plane and in a transverse plane.

Description

A Drill Guide
The present invention relates to a drill guide particularly, but not exclusively, a femoral drill guide for use during a partial knee replacement.
Background
During knee arthroplasty, particularly a partial knee replacement, the joint is prepared by first resecting the tibial plateau. Following resection of the tibial plateau, one or more holes are then drilled into the femoral condyle to receive a cutting guide for resecting the condyle. Conventionally, a hole is made in the intramedullary canal of the femur, into which an intramedullary rod is inserted. The intramedullary rod acts as a reference for the drilling of the hole or holes which locate the cutting guide. These holes may also serve to locate the femoral component of the prosthetic following resection of the femoral condyle.
The femoral component may comprise a single fixation peg or two fixation pegs which are received in holes in the femur. In addition or as an alternative, the femoral component may comprise one or more webs. The webs may be thin layers of material, which may extend between the pegs.
A two peg component provides greater coverage (i.e. a larger degree of rotation) and may be selected where the patient's lifestyle is such that they are squatting regularly. As described previously, the intramedullary rod is used as a reference for locating the hole(s) for receiving the cutting guide. A drill guide may be used to reference from the intramedullary rod in order to properly locate the cutting guide. Existing drill guides require the surgeon to align the drill guide with the intramedullary rod in various planes so that the guide hole is placed in the correct position on the femur.
In a known technique, a tibial template is placed on the resected tibial plateau and the drill guide inserted into the operative wound. A feeler gauge is then inserted in between the tibial template and the drill guide. Due to this layering of components there is a stack up in the tolerances of each component.
It is desirable to provide a drill guide which has a simplified alignment process. Statements of Invention
According to a first aspect of the invention, there is provided a drill guide comprising: a body comprising a hole extending therethrough for guiding a drill; and an alignment tool, the alignment tool being operable to connect the body to an intramedullary rod, such that the orientation of the body is fixable with respect to the intramedullary rod in an anteroposterior plane and in a transverse plane.
According to a second aspect of the invention, there is provided a drill guide comprising: a body comprising a hole extending therethrough for guiding a drill; wherein the body comprises a fixed foot and a movable foot which are receivable within a joint; wherein the movable foot is releasably attached to the body and, when in a released state, the movable foot is translatable with respect to the fixed foot, such that the fixed foot contacts a first bone of the joint and the movable foot contacts a second bone of the joint.
According to a third aspect of the invention, there is provided a drill guide comprising: a body and a tubular element, the tubular element having a hole extending therethrough for guiding a drill; wherein the tubular element is pivotably mounted with respect to the body such that the angle of the tubular element with respect to the body is adjustable.
Any of the above aspects of the invention may be combined with one or more of the other aspects of the invention and/or one or more of the optional features set out below.
The alignment tool may comprise a first arm and a second arm, the first arm being operable to connect the alignment tool to the body and the second arm being operable to connect the alignment tool to the intramedullary rod. The first and second arms may be pivotably connected to one another such that the distance between the first and second arms can be altered.
The intramedullary rod may be cannulated and the second arm is received within the intramedullary rod.
The body may have a mounting hole for receiving the alignment tool. The mounting hole may be angled to the left or right lateral side of the body. The mounting hole may be angled to the left or right lateral side of the body by 7°.
The mounting hole may be angled in the vertical plane relative to the body.
The mounting hole may be angled down by 5°. The alignment tool may comprise a handle.
The movable foot may be releasably attached to the body by a screw which passes through a slot in the body and into the movable foot. The movable foot may be locked in position by tightening the screw such that a section of the body disposed between a head of the screw and the movable foot is held therebetween.
The drill guide may further comprise an incremental locking means for locking the movable foot in predefined positions.
A leading edge of the movable foot may be curved in the plane of the movable foot.
An underside of the movable foot may be curved along its length.
The hole may comprise first and second holes, which extend through the body at different angles.
The first and second holes may be angled at 0° and 10° respectively or 5° and 15° respectively.
The body may further comprise a protrusion on a left lateral side of the body and a protrusion on a right lateral side of the body. The distance between the protrusions may be equal to a width of a femoral component. The drill guide may further comprise a locking mechanism for locking the angle of the tubular element with respect to the body.
The drill guide may further comprise an indexing mechanism for positioning the tubular element in predefined angles with respect to the body.
The tubular element may be translatable with respect to the body.
The tubular element may be translatable toward the top or bottom of the body.
Brief Description of the Drawings
For a better understanding of the present invention, and to show more clearly how it may be carried into effect, reference will now be made, by way of example, to the accompanying drawings, in which:-
Figure 1 is a side view of a drill guide in accordance with the invention, wherein the drill guide is in use; Figure 2 is a top view of the drill guide;
Figure 3 is a front view of the drill guide; and
Figure 4 is a second side view of the drill guide in Figure 1 during drilling.
Detailed description
Figure 1 shows a drill guide 2 in accordance with a first embodiment of the invention, wherein the drill guide is located in a knee joint between the tibia and the femur. The drill guide 2 comprises a body 4. The body 4 has a first drilling hole 6 and a second drilling hole 8 which each extend longitudinally through the body 4 (as shown in Figure 3). The first and second drilling holes 6, 8 are aligned at different angles which correspond to the required location of holes for the single peg femoral component or the two peg femoral component. In the Figures, the first and second drilling holes 6, 8 are shown angled at 0° and 10" respectively, however the angles may be chosen as 5° and 15° or other suitable angles for the femoral components which may be used. The body 4 of the drilling guide 2 is provided with protrusions 10, 12 on both the left lateral and right lateral side of the body 4. The distance from the end of one protrusion to the other is equal to the width of the femoral component and thus provides a means of aligning the drill guide 2 in the centre of the femoral condyle.
The drill guide 2 may be supplied in different sizes which correspond to the size of the femoral component e.g. the width of the component and/or the radius of curvature of the component. Alternatively, the protrusions 10, 12 may be replaced with different sized protrusions to indicate the correct width of the component.
The body 4 is provided with a fixed foot 14 and a movable foot 16. The movable foot 16 is releasably attached to the body 4 by a screw 18 or other such means which passes through a slot 19 in the body 4 and into the movable foot 16. The movable foot 16 is locked in position by tightening the screw 18 such that the section of the body 4 disposed between the head of the screw 18 and the movable foot 16 is held therebetween. The movable foot 16 is released by undoing the screw 18 sufficiently so that the body 4 is no longer held between the head of the screw 18 and the movable foot 16. The movable foot 16 is then free to translate toward or away from the fixed foot 14.
The body 4 and movable foot 16 may be provided with an incremental locking means 20. The incremental locking means 20 allows the movable foot 16 to be translated and locked in predefined positions. The incremental locking means 20 may be provided with a scale for determining the position of the movable foot 16.
The fixed foot 14 is narrow to allow reference off the posterior femoral condyle without interference from femoral osteophytes. The movable foot 16 has a leading edge which is curved in the plane of the movable foot 16. This allows the movable foot 16 and therefore the drill guide 2 to be angled relative to the vertical cut on the tibial plateau. The underside of the movable foot 16 is also curved along its length. This curvature allows the drill guide 2 to be rotated about the tibial plateau in the anteroposterior plane. The drill guide 2 further comprises an alignment tool 22 for aligning the body 4. The alignment tool 22 has a handle 23 and a bifurcated end, the bifurcated end having a first arm 25 and a second arm 26. The first arm 25 is received within a mounting hole 28 provided on the top of the body 4 of the drill guide 2. The drill guide 2 is provided with two mounting holes 28 for use of the drill guide 2 on a left or right knee. An intramedullary rod 24 is passed into the intramedullary canal of the patient, which provides a reference for the drill guide 2. At least an end portion of the intramedullary rod 24 is cannulated and the second arm 26 is received within the intramedullary rod 24. Alternatively, the second arm 26 may be cannulated so that the intramedullary rod 24 is received within the second arm 26.
The first and second arms 25, 26 are pivotably mounted on the handle 23 of the alignment tool 22 such that the distance between the first and second arms 25, 26 may be altered.
The mounting holes 28 are angled relative to the body 4, either to the left or right lateral side of the body 4 as shown in Figure 2, to provide the correct alignment, preferably 7°, for the drill guide 2 relative to the intramedullary rod 24. Also the mounting holes 28 may be angled in the vertical plane relative to the body 4; preferably they are angled down by 5°, as shown in Figure 2.
In use, following resection of the tibial plateau, the drill guide 2 is inserted into the operative wound of the patient, with the movable foot 16 aligned with the fixed foot 14. The movable foot 16 is then translated vertically such that the fixed foot 14 contacts the posterior femoral condyle and the movable foot 16 contacts the tibial plateau.
The position of the movable foot 16 is determined by the amount of bone resected from the tibial plateau. The scale on the incremental locking means 20 may correspond to a setting on a previously used resection guide. This allows the surgeon to easily adjust the movable foot 16 to the correct position for the amount of bone resected from the tibial plateau so that the drill holes are correctly aligned on the distal femoral condyle.
The alignment tool 22 is connected to both the body 4 and the intramedullary rod 24 by inserting the first arm 25 into the correct mounting hole 28 and by inserting the second arm 26 into the cannulated end of the intramedullary rod 24. The protrusions 10, 12 on the body 4 are then used to align the drill guide 2 in the centre of the femoral condyle. The pivotably mounted first and second arms 25, 26 allow the distance between the first and second arms 25, 26 to be altered. This allows the drill guide 2 to be moved laterally whilst maintaining the correct alignment with the intramedullary rod 24 in both the anteroposterior and transverse planes.
As mentioned previously, the curvature of the underside of the movable foot 16 allows the drill guide to be rotated about the tibial plateau in the anteroposterior plane. This therefore enables the drill guide 2 to correctly align the drilling holes 6, 8 without the knee being in perfect 90° flexion.
As shown in Figure 4, once the drill guide 2 is correctly aligned a drill 30 is passed through one of the first and second drilling holes 6, 8 and drilled into the distal femoral condyle. The drill 30 is drilled into the distal femoral condyle until a stop 32 on the drill 30 abuts the body 4 and prevents the drill 30 from drilling any deeper. The length of the first and second drilling holes 6, 8 and the length of the drill 30 therefore controls the depth of the hole. .
Following drilling, the hole may be used to mount a cutting guide and/or milling spigot for resection of the femoral condyle to the desired shape for the femoral component.
In an alternative embodiment of the invention, the fixed foot may contact the tibial plateau and the movable foot may contact the posterior femoral condyle. In another embodiment of the invention, the first and second drilling holes 6, 8 may be replaced by a single drilling hole which is pivotably mounted in the body 4. By virtue of this pivotable mounting, the angle of the single drilling hole may be adjusted to correspond to the femoral component and locked in position by a locking mechanism. The locking mechanism and single drilling hole may be provided with an indexing mechanism which provides discrete angles for the single drilling hole.
The present invention has been described in reference to a knee replacement; however the invention may be adapted to be used in other joints. The present invention provides a drill guide which does not require the use of feeler gauges and which has a direct connection to the intramedullary rod so as to simplify alignment of the drill guide.

Claims

Claims
1. A drill guide comprising:
a body comprising a hole extending therethrough for guiding a drill; and an alignment tool, the alignment tool being operable to connect the body to an intramedullary rod, such that the orientation of the body is fixable with respect to the intramedullary rod in an anteroposterior plane and in a transverse plane.
2. A drill guide as claimed in claim 1 , wherein the body comprises a fixed foot and a movable foot which are receivable within a joint;
wherein the movable foot is releasably attached to the body and, when in a released state, the movable foot is translatable with respect to the fixed foot, such that the fixed foot contacts a first bone of the joint and the movable foot contacts a second bone of the joint.
3. A drill guide as claimed in claim 1 or 2, wherein the alignment tool comprises a first arm and a second arm, the first arm being operable to connect the alignment tool to the body and the second arm being operable to connect the alignment tool to the intramedullary rod.
4. A drill guide as claimed in claim 3, wherein the first and second arms are pivotably connected to one another such that the distance between the first and second arms can be altered.
5. A drill guide as claimed in claim 3 or 4, wherein the intramedullary rod is cannulated and the second arm is received within the intramedullary rod.
6. A drill guide as claimed in any preceding claim, wherein the body has a mounting hole for receiving the alignment tool.
7. A drill guide as claimed in claim 6, wherein the mounting hole is angled to the left or right lateral side of the body.
8. A drill guide as claimed in claim 7, wherein the mounting hole is angled to the left or right lateral side of the body by 7°.
9. A drill guide as claimed in any one of claims 6 to 8, wherein the mounting hole is angled in the vertical plane relative to the body.
10. A drill guide as claimed in claim 9, wherein the mounting hole is angled down by 5°.
11. A drill guide as claimed in any one of the preceding claims, wherein the alignment tool comprises a handle.
12. A drill guide as claimed in claim 2 or any one of claims 3 to 1 1 when dependent on claim 2, wherein the movable foot is releasably attached to the body by a screw which passes through a slot in the body and into the movable foot.
13. A drill guide as claimed in claim 12, wherein the movable foot is locked in position by tightening the screw such that a section of the body disposed between a head of the screw and the movable foot is held therebetween.
14. A drill guide as claimed in claim 2, 12 or 13 or any one of claims 3 to 11 when dependent on claim 2, further comprising an incremental locking means for locking the movable foot in predefined positions.
15. A drill guide as claimed in claim 2 or any one of claims 12 to 14 or any one of claims 3 to 11 when dependent on claim 2, wherein a leading edge of the movable foot is curved in the plane of the movable foot.
16. A drill guide as claimed in claim 2 or any one of claims 12 to 15 or any one of claims 3 to 11 when dependent on claim 2, wherein an underside of the movable foot is curved along its length.
17. A drill guide as claimed in any one of the preceding claims, wherein the hole is defined by a tubular element which is pivotably mounted with respect to the body such that the angle of the tubular element with respect to the body is adjustable.
18. A drill guide as claimed in any one of the preceding claims, wherein the hole comprises first and second holes, which extend through the body at different angles.
19. A drill guide as claimed in claim 18, wherein the first and second holes are angled at 0° and 10° respectively or 5° and 15° respectively.
20. A drill guide as claimed in any one of the preceding claims, wherein the body further comprises a protrusion on a left lateral side of the body and a protrusion on a right lateral side of the body.
21. A drill guide as claimed in claim 20, wherein the distance between the protrusions is equal to a width of a femoral component.
22. A drill guide comprising: a body comprising a hole extending therethrough for guiding a drill;
wherein the body comprises a fixed foot and a movable foot which are receivable within a joint;
wherein the movable foot is releasably attached to the body and, when in a released state, the movable foot is translatable with respect to the fixed foot, such that the fixed foot contacts a first bone of the joint and the movable foot contacts a second bone of the joint.
23. A drill guide as claimed in claim 22, wherein the movable foot is releasably attached to the body by a screw which passes through a slot in the body and into the movable foot.
24. A drill guide as claimed in claim 23, wherein the movable foot is locked in position by tightening the screw such that a section of the body disposed between a head of the screw and the movable foot is held therebetween.
25. A drill guide as claimed in any one of claims 22 to 24, further comprising an incremental locking means for locking the movable foot in predefined positions.
26. A drill guide as claimed in any one of claims 22 to 25, wherein a leading edge of the movable foot is curved in the plane of the movable foot.
27. A drill guide as claimed in any one of claims 22 to 26, wherein an underside of the movable is curved along its length.
28. A drill guide comprising:
a body and a tubular element, the tubular element having a hole extending therethrough for guiding a drill; wherein the tubular element is pivotably mounted with respect to the body such that the angle of the tubular element with respect to the body is adjustable.
29. A drill guide as claimed in claim 28, further comprising a locking mechanism for locking the angle of the tubular element with respect to the body.
30. A drill guide as claimed in claim 28 or 29, further comprising an indexing mechanism for positioning the tubular element in predefined angles with respect to the body.
31. A drill guide as claimed in any one of claims 28 to 30, wherein the tubular element is translatable with respect to the body.
32. A drill guide as claimed in claim 31 , wherein the tubular element is translatable toward the top or bottom of the body.
PCT/GB2010/002117 2009-11-18 2010-11-17 A drill guide WO2011061489A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP10781729.8A EP2501302B1 (en) 2009-11-18 2010-11-17 A drill guide
KR1020127015320A KR101757010B1 (en) 2009-11-18 2010-11-17 A Drill Guide
JP2012539404A JP5750117B2 (en) 2009-11-18 2010-11-17 Drill guide
US13/510,480 US9028503B2 (en) 2009-11-18 2010-11-17 Drill guide
EP15152599.5A EP2896375B1 (en) 2009-11-18 2010-11-17 A drill guide
CA2781006A CA2781006C (en) 2009-11-18 2010-11-17 Drill guide for mounting an intramedullary rod
AU2010320719A AU2010320719B2 (en) 2009-11-18 2010-11-17 A drill guide

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0920225.0 2009-11-18
GB0920225A GB2475491A (en) 2009-11-18 2009-11-18 Alignment tool for a femoral drill guide

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WO2011061489A1 true WO2011061489A1 (en) 2011-05-26

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EP (2) EP2896375B1 (en)
JP (1) JP5750117B2 (en)
KR (1) KR101757010B1 (en)
AU (1) AU2010320719B2 (en)
CA (1) CA2781006C (en)
GB (1) GB2475491A (en)
WO (1) WO2011061489A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2482702A (en) * 2010-08-11 2012-02-15 Biomet Uk Healthcare Ltd Ligament balancer
US8672946B2 (en) 2011-02-11 2014-03-18 Biomet Manfacturing, LLC Method and apparatus for performing knee arthroplasty
US9907558B2 (en) 2011-07-08 2018-03-06 Smith & Nephew, Inc. Osteotomy guide and method
US9955963B2 (en) 2011-07-08 2018-05-01 Smith & Nephew, Inc. Soft tissue repair
US9241784B2 (en) 2011-07-08 2016-01-26 Smith & Nephew, Inc. Soft tissue reconstruction
US9662105B2 (en) 2011-07-08 2017-05-30 Smith & Nephew, Inc. Suture passer and method
US8882834B2 (en) 2011-07-08 2014-11-11 Smith & Nephew, Inc. Soft tissue repair
US9357997B2 (en) 2011-07-08 2016-06-07 Smith & Nephew, Inc. Suture passer and method
BR112014000472A2 (en) 2011-07-08 2017-02-21 Smith & Nephew Inc orthopedic instruments
GB2506616B (en) * 2012-10-03 2018-12-05 Corin Ltd Leg alignment apparatus and method
KR102053600B1 (en) * 2017-07-25 2019-12-11 주식회사 코렌텍 Patient-Specific Artificial Shoulder Joint Surgical Instruments

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4566448A (en) * 1983-03-07 1986-01-28 Rohr Jr William L Ligament tensor and distal femoral resector guide
US5314429A (en) * 1990-09-07 1994-05-24 Marlowe Goble E Method for forming a tunnel intersecting a straight cruciate ligament tunnel
US5531751A (en) * 1993-06-02 1996-07-02 Gerhard Weber Aiming tube assembly
EP1095626A1 (en) * 1999-11-01 2001-05-02 Sulzer Orthopedics Ltd. Intramedullary nail for the radius
WO2001085038A1 (en) * 2000-04-27 2001-11-15 Finsbury (Development) Limited Tenser for performing a knee replacement operation
US20020183750A1 (en) * 2001-05-25 2002-12-05 Buhler Daniel W. Femur marrow nail for insertion at the knee joint
WO2003068119A2 (en) * 2002-02-14 2003-08-21 Abendschein Walter F Method and instrumentation for patello-femoral joint replacement
EP1462064A2 (en) * 2003-03-13 2004-09-29 Centerpulse Spine-Tech, Inc. Spinal access instrument
EP1479350A2 (en) * 1996-04-25 2004-11-24 Nuvana Medical Innovations, L.L.C. Intermedullary rod apparatus for repairing proximal humerus fractures
US20060064104A1 (en) * 2004-09-09 2006-03-23 Kana Richard J Translating surgical mount
EP1709914A1 (en) * 2002-04-08 2006-10-11 Mathys Medizinaltechnik AG Ligament tensioning device with cutting jig
WO2008064211A1 (en) * 2006-11-21 2008-05-29 Smith & Nephew, Inc. Variable angle drill guide
US20090157077A1 (en) * 2007-12-17 2009-06-18 Wright Medical Technology, Inc. Guide assembly for intramedullary fixation and method of using the same

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666430A (en) * 1949-05-31 1954-01-19 Gispert Humberto Altamirano Hip nail aiming and guiding device
US2697433A (en) * 1951-12-04 1954-12-21 Max A Zehnder Device for accurately positioning and guiding guide wires used in the nailing of thefemoral neck
ATE85202T1 (en) * 1987-10-21 1993-02-15 Smith & Nephew Richards Inc SURGICAL INSTRUMENT.
EP0613658B1 (en) * 1993-03-05 2001-09-12 Sulzer Orthopädie AG Apparatus for determining the course of drill-holes in bone
US5423827A (en) * 1994-06-02 1995-06-13 Intermedics Orthopedics, Inc. Surgical jig for femoral knee prosthesis
IT1268313B1 (en) * 1994-07-28 1997-02-27 Orthofix Srl MECHANICAL EQUIPMENT FOR CENTERING BLIND HOLES FOR BONE SCREWS OF INTRAMIDOLLAR NAILS
DE29504857U1 (en) * 1995-03-22 1995-05-18 Aesculap Ag Drilling jig for surgical drilling tools
GB9611074D0 (en) * 1996-05-28 1996-07-31 Howmedica Surgical apparatus
AT410282B (en) * 2000-09-01 2003-03-25 Ender Hans Georg Bone-peg for fixing split fracture of joint bone head of humerus, has hole which is provided at bone-peg edge portion for inserting screw to hold fracture split of joint bone head
ATE330565T1 (en) * 2001-04-27 2006-07-15 Zimmer Gmbh DRILLING JIG FOR DETERMINING THE AXIS OF A FEMURAL HEAD PROSTHESIS
FR2829376A1 (en) * 2001-09-07 2003-03-14 Bertrand Bergue Knee joint arthroplasty cutting line marker has femoral and tibial instruments with assembly system
US20040153066A1 (en) * 2003-02-03 2004-08-05 Coon Thomas M. Apparatus for knee surgery and method of use
US20040220583A1 (en) * 2003-02-04 2004-11-04 Zimmer Technology, Inc. Instrumentation for total knee arthroplasty, and methods of performing same
DE10309493A1 (en) * 2003-02-26 2004-09-16 Aesculap Ag & Co. Kg Positioning and holder device for surgical tool guide, e.g. for knee operations, has fastener rotatably mounted in off centre position on platform
EP1470786B1 (en) * 2003-04-25 2005-10-05 Zimmer GmbH Device for preparation of a femoral condyle
US7481814B1 (en) * 2003-07-28 2009-01-27 Biomet Manufacturing Corporation Method and apparatus for use of a mill or reamer
GB0404347D0 (en) * 2004-02-27 2004-03-31 Depuy Int Ltd A drill guide assembly
WO2005084560A1 (en) * 2004-03-01 2005-09-15 Depuy International Limited An alignment instrument for use with an intramedullary nail
DE102004063977A1 (en) * 2004-10-19 2006-06-22 Mathys Ag Bettlach Ligament Tension Device, Cutting Guide and Osteotomy Technique
GB2423021A (en) * 2005-02-15 2006-08-16 Biomet Uk Ltd A surgical guide jig with an expanding spherical joint
US20070100346A1 (en) * 2005-10-27 2007-05-03 Wyss Joseph G Support for locating instrument guides
US8685034B2 (en) * 2006-08-10 2014-04-01 Stryker Trauma Gmbh Distal targeting device

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4566448A (en) * 1983-03-07 1986-01-28 Rohr Jr William L Ligament tensor and distal femoral resector guide
US5314429A (en) * 1990-09-07 1994-05-24 Marlowe Goble E Method for forming a tunnel intersecting a straight cruciate ligament tunnel
US5531751A (en) * 1993-06-02 1996-07-02 Gerhard Weber Aiming tube assembly
EP1479350A2 (en) * 1996-04-25 2004-11-24 Nuvana Medical Innovations, L.L.C. Intermedullary rod apparatus for repairing proximal humerus fractures
EP1095626A1 (en) * 1999-11-01 2001-05-02 Sulzer Orthopedics Ltd. Intramedullary nail for the radius
WO2001085038A1 (en) * 2000-04-27 2001-11-15 Finsbury (Development) Limited Tenser for performing a knee replacement operation
US20020183750A1 (en) * 2001-05-25 2002-12-05 Buhler Daniel W. Femur marrow nail for insertion at the knee joint
WO2003068119A2 (en) * 2002-02-14 2003-08-21 Abendschein Walter F Method and instrumentation for patello-femoral joint replacement
EP1709914A1 (en) * 2002-04-08 2006-10-11 Mathys Medizinaltechnik AG Ligament tensioning device with cutting jig
EP1462064A2 (en) * 2003-03-13 2004-09-29 Centerpulse Spine-Tech, Inc. Spinal access instrument
US20060064104A1 (en) * 2004-09-09 2006-03-23 Kana Richard J Translating surgical mount
WO2008064211A1 (en) * 2006-11-21 2008-05-29 Smith & Nephew, Inc. Variable angle drill guide
US20090157077A1 (en) * 2007-12-17 2009-06-18 Wright Medical Technology, Inc. Guide assembly for intramedullary fixation and method of using the same

Also Published As

Publication number Publication date
EP2501302A1 (en) 2012-09-26
EP2896375B1 (en) 2020-04-15
AU2010320719A1 (en) 2012-06-07
GB2475491A (en) 2011-05-25
KR101757010B1 (en) 2017-07-11
CA2781006C (en) 2018-07-24
EP2896375A1 (en) 2015-07-22
US20120323249A1 (en) 2012-12-20
CA2781006A1 (en) 2011-05-26
US9028503B2 (en) 2015-05-12
GB0920225D0 (en) 2010-01-06
JP2013511316A (en) 2013-04-04
JP5750117B2 (en) 2015-07-15
EP2501302B1 (en) 2015-11-11
KR20120132468A (en) 2012-12-05
AU2010320719B2 (en) 2015-01-22

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